Seller notes

For use on the 2003 & 2004 KXF400 and LTZ400. Raises the RPM on these models by 750 RPM.Advantage Performance Rev Box, Improves the stock ignition advance for improved bottom end and mid-range performance.Additionally, the rev-limit is raised between 750-1000 RPM based on the engine's requirements.Unleash the potential of your engine.Highly recommended to maximize performance levels for exhaust and intake modifications....

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